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2 years ago

Which statement describes the role of xylem in vascular plants

Biology

2 answers:

Annette [7]2 years ago

6 0

Answer:

The answer is Xylem is a conductive plant tissue that transports liquids from one part of the vascular plants to another.

Explanation:

The xylem is a lignified plant tissue of conduction, that carries liquids from one part of the vascular plants to another and also provides mechanical support. This plant tissue carries water, mineral salts and other nutrients from the roots to the leaves of the plants; said transported substance is called raw sap.

RSB [31]2 years ago

5 0

The role of xylem is to transport water and some nutrients from roots to shoots and leaves.

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How is enthalpy used to predict whether a reaction is endothermic or exothermic?

Radda [10]

Answer:

$329.48 KJ/mol$ heat is released by the combustion of $2 mol$ of methane

Explanation:

The value of enthalpy determines whether the reaction is exothermic or endothermic. If the enthalpy change is positive, then the reaction is endothermic (heat or energy released) and if the enthalpy change is negative then the reaction is exothermic (heat or energy absorbed).

$2CH_4(g)+4O_2(g) => 2CO_2(g)+4H_2O(g)$

$\Delta H \ reaction=[ 2(\Delta HfCO_2)+ 4(\Delta HfH_2O)]-[2(\Delta HfCH_4)+4(\Delta HfO_2)]$

= $2 ( -(393.5 KJ)/mol)-[2( -74.6 KJ/mol)+4(-241.82 KJ/mol)]$

$= -787 KJ/mol-[ -149.2 KJ/mol-967.28 KJ/mol]$

$= -787 KJ/mol+1116.48 KJ/mol$

$=329.48 KJ/mol$

In this question, the enthalpy of formation has positive value and hence the reaction is endothermic in which the heat is released.

3 0

2 years ago

What is Lactobacillus ?

Marina CMI [18]

Your question has been heard loud and clear.

Lactobacillus is a type of bacteria that mainly occurs in fermented media like yoghurts and curds , but they are mostly present in our body and make up a part of our microbiome by being present in our digestive tracts , genital systems and urinary tracts , doing their job without harming us.

Thank you.

4 0

2 years ago

An example of a physical contaminant is a

Zinaida [17]

Answer:

Common examples of physical contaminants include hair, bandages, fingernails, jewelry, broken glass, metal, paint flakes, bone, the body parts of pests, or pest droppings.

Explanation:

3 0

2 years ago

Which organelle coordinates translation

nydimaria [60]

A ribosome coordinates translation.

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3 years ago

Select one organism that lives in the Ecosystem and describe three adaptations the organism possesses. Explain why the adaptatio

lesya [120]

Explanation:

Hey, there!

The eco-system consists of various type of organisms in tge ecosystem. The all type of organism as producer, decomposer, consumers live in ecosystem.

Three adaptations of organism are:

By losing and gaining of organs: Some of the animals lose their organs to survive in some places like yak have more hair to survive in cold places.
By changing the colour of body: Some animals such as grasshopper changes their colour to survive in places.
By modification of organs: some animals modify their organs to survive such as legs and beak of ducks are modified to survive in swim and search foods.

The importance of adaptation are:

It helps organism to live a longer life.
The adaptation helps to make an organism fittest to any environment.
The adaptation helps an organism to search foods and live their life.

Hope it helps...

5 0

2 years ago